Frog Sit-up
Target your rectus abdominis and hip flexors with the Frog Sit-up. This effective core exercise uses a unique leg position to enhance abdominal engagement.
Description
Frog Sit-up is an effective exercise that targets the abs, particularly the lower abs. It begins in a sit-up position with the soles of the feet together and knees wide apart, imitating a frog's legs. The exercise involves lifting your torso towards your legs while keeping your hands straight.
How to Do Frog Sit-up
- 1Setup
Lie on your back with your knees bent and the soles of your feet pressed together, allowing your knees to fall open wide to the sides, forming a diamond shape with your legs.
- 2Setup
Extend your arms straight overhead or cross them over your chest, ensuring your lower back maintains a neutral position against the floor.
- 3
Exhale and engage your core, initiating the movement by lifting your head, shoulders, and upper back off the floor, bringing your chest towards your feet.
- 4
Continue to curl your torso upwards until your shoulder blades are fully off the floor and your core is fully contracted, maintaining the frog leg position.
- 5
Inhale as you slowly and controlledly lower your torso back down to the starting position, allowing your shoulder blades to gently touch the floor.
Tips
- Focus on initiating the movement from your core, not by pulling with your neck or arms, to maximize abdominal engagement.
- Maintain the 'frog' leg position throughout the entire movement; resist the urge to let your knees come together.
- Control the descent phase, slowly lowering your torso back down to increase time under tension and enhance muscle activation.
- Keep your gaze directed towards your knees or the ceiling to help maintain a neutral neck position and avoid strain.
Common Mistakes
- ×Pulling on the neck instead of engaging the core can lead to neck strain; focus on keeping your chin slightly tucked and lifting with your abs.
- ×Rushing the movement reduces effectiveness; perform each repetition slowly and with control, especially during the eccentric phase.
- ×Lifting the lower back off the floor too early indicates hip flexor dominance; ensure your core is engaged to stabilize your pelvis and keep your lower back pressed down.
Variations

Vertical Sit-Up
Perform the vertical sit-up to strengthen your rectus abdominis and hip flexors. Lie on your back, lift legs vertically, then crunch your torso towards

Half Sit-up
A half sit-up targets the rectus abdominis and iliopsoas, strengthening your core. Learn proper form to enhance abdominal definition and stability.

Quarter Sit-up
Engage your upper abs with the Quarter Sit-up, a focused bodyweight exercise. Lift your head and shoulders slightly for core strength and definition.

Straight Leg Sit-up
Master the straight leg sit-up, a core-strengthening exercise. Keep legs flat and straight to specifically target your abdominal muscles.
Related Exercises

Bottoms Up
Strengthen your rectus abdominis with the Bottoms Up exercise. This bodyweight core movement builds abdominal strength and control.

Seated 8 Leg Crunch
Strengthen your core and sculpt your obliques with the Seated 8 Leg Crunch. This bodyweight exercise targets your abs and hip flexors for improved

Lying Leg Cross
Lie on your back and cross one leg over the other, gently pulling it towards your chest to stretch and strengthen the inner thighs, hips, and obliques.

Frog Crunch
Strengthen your rectus abdominis with the Frog Crunch. Lie on your back, knees bent and out, feet together, then crunch up, engaging your core.

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